Kathanha d-mag-短镖鼓杂志（Katana）

This is a nerf drum mag based on the Katana or Kathanha geometry.
Its not shaped like a conventional drum, but its usable in both directio, so suitable for both right- and lefthande because the shape is symetrical.
The follower is also curved and can only be mounted in the right direction.
Capacity is 25 darts.
Print both halfs laying down, and the folower standing on the bottom side.
You need a drum sping (foamblaster for example) for this.
V2: (29.03.20)

reinforced spring holder
added fillet to the catch, so it can be released on catches without lever